Agriculture nonpoint pollution source is a significant contributor to water quality degradation. To establish effective water quality control policy, environpolitics establishment person must be able to estimate nonpoint source loads to lakes and streams. To meet this need for orchard area, we investigated a real rainfall runoff phenomena about it. We developed nonpoint source runoff estimation models for vineyard area that has lots of fertilizer, compost specially between agricultural areas. Data used in nonpoint source estimation model gained from real measuring runoff loads and it surveyed for two years(2008-2009 year) about vineyard. Nonpoint source runoff loads estimation models were composed of using independent variables(rainfall, storm duration time(SDT), antecedent dry weather period(ADWP), total runoff depth(TRD), average storm intensity(ASI), average runoff intensity(ARI)). Rainfall, total runoff depth and average runoff intensity among six independent variables were specially high related to nonpoint source runoff loads such as BOD, COD, TN, TP, TOC and SS. The best regression model to predict nonpoint source runoff load was Model 6 and regression factor of all water quality items except for was R² =0.85.

Abstract
 1. 서 론
 2. 자료 및 방법
  2.1. 조사지점 특성
  2.2. 입력 변수
  2.3. 상관성 분석
 3. 결과 및 고찰
  3.1. 수질항목별 상관성 분석
  3.2. 비점오염 부하량 추정 모델식 개발
 4. 결 론
 참 고 문 헌

• 윤영삼(국립환경과학원 낙동강물환경연구소) | Young-Sam Yoon (Nakdong River Water Environment Research Center, National Institute of Environmental Research) Corresponding Author
• 권헌각(국립환경과학원 낙동강물환경연구소) | Hun-Gak Kwon (Nakdong River Water Environment Research Center, National Institute of Environmental Research)
• 이윤정(국립환경과학원 낙동강물환경연구소) | Youn-Jung Yi (Nakdong River Water Environment Research Center, National Institute of Environmental Research)
• 유재정(국립환경과학원 낙동강물환경연구소) | Jay-Jung Yu (Nakdong River Water Environment Research Center, National Institute of Environmental Research)
• 이재관(국립환경과학원 낙동강물환경연구소) | Jae-Kwan Lee (Nakdong River Water Environment Research Center, National Institute of Environmental Research)